Effective strengthening and toughening in Zn–1Mg alloy with bimodal grain structure achieved by conventional extrusion

doi:10.1016/j.msea.2022.143850

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	Effective strengthening and toughening in Zn–1Mg alloy with bimodal grain structure achieved by conventional extrusion
	Li, Ruimin 1,2; Ding, Yutian 1,2; Zhang, Hongfei 1,2; Lei, Jian 1,2; Shen, Yue 1,2
刊名	Materials Science and Engineering A
	2022-09-27
卷号	854
关键词	Binary alloys Dynamic recrystallization Dynamics Eutectics Extrusion Nucleation Tensile strength Tensile testing Zinc alloys Bi-modal grain structure Bi-modal structures DRX Extrusion ratio Microstructures and mechanical properties Primary α SEM-EBSD Simple++ Three-component XRD
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.143850
英文摘要	This parper reports a simple extrusion pathway for fabricating Zn–1Mg alloy with a bimodal structure. The alloy was prepared by casting and extruding at 200 °C and an extrusion ratio of 25:1. Microstructure and mechanical properties of the Zn–1Mg alloys were systematically investigated using OM, XRD, SEM, EBSD, TEM, and tensile tests. The results show that the Zn–1Mg alloy consisted of primary α-Zn dendrites and a three-component eutectic structure of α-Zn + Mg2Zn11 + MgZn2. The yield strength, ultimate tensile strength and elongation of extruded alloy at room temperature reached ∼289 MPa, ∼320 MPa, and ∼32%; and the average size of fine grains and coarse grains were ∼1.65 and ∼6.84 μm, respectively. Besides, dynamic recrystallization occurred during hot deformation, and particles in the broken phase were effective sites for the nucleation of dynamic recrystallized grains nucleation via a particle-stimulated nucleation mechanism. © 2022 Elsevier B.V.
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159717]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Ruimin,Ding, Yutian,Zhang, Hongfei,et al. Effective strengthening and toughening in Zn–1Mg alloy with bimodal grain structure achieved by conventional extrusion[J]. Materials Science and Engineering A,2022,854.
APA	Li, Ruimin,Ding, Yutian,Zhang, Hongfei,Lei, Jian,&Shen, Yue.(2022).Effective strengthening and toughening in Zn–1Mg alloy with bimodal grain structure achieved by conventional extrusion.Materials Science and Engineering A,854.
MLA	Li, Ruimin,et al."Effective strengthening and toughening in Zn–1Mg alloy with bimodal grain structure achieved by conventional extrusion".Materials Science and Engineering A 854(2022).